[Keyboard] Add via keymap to E6.5 (qmk#10771)

* Added basic via keymap

* Added via keymaps and changed config Product and Vendor ID

* Update keyboards/exclusive/e65/keymaps/via/keymap.c

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/exclusive/e65/config.h

Co-authored-by: Ryan <fauxpark@gmail.com>

* Refactored via/keymap.c to use LAYOUT_all

* Refactored e65.h to remove nested matrix layouts

* Previous commit missed LAYOUT_65_ansi_blocker. Fixed

Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/exclusive/e65/config.h

@@ -19,8 +19,8 @@
 #include "config_common.h"
 
 /* USB Device descriptor parameter */
-#define VENDOR_ID    0xFEED
-#define PRODUCT_ID   0x6060
+#define VENDOR_ID    0x4558 // "EX"
+#define PRODUCT_ID   0xE605 // E6.5
 #define DEVICE_VER   0x0001
 #define MANUFACTURER Exclusive / E-Team
 #define PRODUCT      E6.5